Support device that can be attached to a trailer tow bar

The device has an outer pipe (1) fastened at a trailer drawbar, and an inner pipe telescopically, vertically and adjustably held in the outer pipe by a crank handle (2). Wheel lugs (5) are fastened at an end of the inner pipe and projected against the outer pipe. A support wheel (4) is mounted between the wheel lugs. An inlet element (6) is connected with another inlet element (7) such that the support wheel is pivoted in a predetermined angular position during retraction of the inner pipe into the outer pipe before reaching a retracted end position of the inner pipe. The former inlet element is designed as an inlet ring, and the latter inlet element is designed as an inlet funnel.